Calculating-machine.



No. 70l,6l|. Pa'uanced lune 3, |902. W. G. POWELL.

GALCULATING MACHINE.

(Application led July 23, 1901.)

2 Sheets-Sheet I.

(No Model.)

'F.IE.

FIB. El.

WUFNESSESI Z A Hawley m: Nonms Pains co. Pnoroumo, mmmocm. n. c

No. 7o|,s||. Patented lune 3, |902. w. s. PowELL. CALCULATING MACHINE.

(Application led July 23, 1901.)

2 Sheets-Sheet 2.

(No Model.)

FID. 4.

01 01 o OO 00 o O 01 loo o o ITNESSES @Zw/ww.

ns co. pHoro-uno.. WASHINGTON.

4UNITED STATES PATENT OFFICE.

VILLIAM G. POl/VELL, OF JACKSONVILLE, FLORIDA, ASSIGNOR TO EUGENE I O. LOCKE, OF JACKSONVILLE, FLORIDA.

CALCULATlNG-NIACHINE.

SPECIFICATION forming part of Letters Patent No. 701,61 1, dated June 3, 1902,

Serial No. 69,358. (No model.)

To all whom, t may concern.'

Beit known that I, WILLIAM G. POWELL, a citizen of the United States, residing at Jacksonville, in the county of Duval and State of Florida, have invented certain new and useful Improvements in Calculating-IVIachines5 and I do hereby declare the following to be a full, clear, and exact description of the invention, such asrwill enable others skilled iu Io the art to which it appertains to make and use the same.

This invention j relates to calculating-machines, and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure l is a plan view of the machine. Fig. 2 is a cross-section taken on the line a; x in Fig. l. Fig. 3 is a section on line y y in Fig; l, showing the bearings for the disk and ring. Fig. 3f is a section through one ofthe concavo-convex projections d. Fig. 4E is a plan view showing a machine provided with an additional disk. Fig. 5 is a crosssection taken on the line ,e in Fig. 4.

A is a front plate, provided with downwardly-projecting flanges a at its edges and feet l) at its corners. These flanges and feet are preferably formed integral with the plate A, the Whole being stamped or pressed from a plate of sheet metal by suitable dies.

B is a back plate which is preferably shaped like a cross, having arms b. The back plate is suspended from the front plate A by bolts c, and c represents distance-pieces between the end portions of the arms and the front plate. The back plate is formed of metal, and it is provided with projections d on its upper surface. The bolts c regulate the position of the back plate. The front plate A is provided with a large circular hole c, and the back plate has a pin E in the center of the hole e.

D is a disk Whichisjournaled on the pin E.

F is a ring interposed between the disk D and the plate Ain the hole e. The ring F is provided with guide-flanges f at its edges, which project under the adjacent edges of the plate A and the disk D. The upper surfaces of the disk D, ring F, and the front 5o plate A are arranged flush with cach other,

and the flaugesf of the ring F rest upon the projections d of the back plate.

In order that the ring F may be revolved easily, the projections d are arranged to support it with as little friction as possible. The projections d are preferably concavo-convex andare struck up or pressed up from the back plate, so as to form convex bearing-surfaces on the upper side of the back plate; but, if desired, the projections may consist of anti- 6o friction-balls d', which revolve in sockets in the back plate.

By reason of the front plate being provided with supporting-flanges a at its edges and by reason of the back plate being provided with radial arms which are suspended by the bolts c from the angle or corner portions of the front plate the working parts of the machine which rest on the said arms are all suspended from the front plate and are supported 7o lby it independent of the table or desk upon which the flanges a rest. This construction enables the machine to Work freely under changes of temperature which expand and contract its parts, and the downward pressure of the fingers of the left hand which rest upon the top plate to steady the machine is communicated through the flanges c' to the table or desk without affecting the working parts of the machine.

The pin E has a thumb-nut g above the disk D, and g is a springinterposed between the thumb-nut and the disk. The thumb-nut affords a means for regulating the pressure ofthe spring and prevents the disk from revolving too freely and enables the frictional contact of the disk with the ring to be regu lated.

The front plate A is divided by radial lines into one hundred equal spaces h around the 9o hole e, and these spaces are numbered from O to 99, consecutively. The ring F is also divided into one hundred spaces l,numbered to correspond withthe spaces 7L, and each space t' is provided with a hole t. The 95 disk D is divided by radial lines into one hundred equal spaces j, which are numbered to correspond with the spaces h and 1', and each Spacey' is provided with a hole j. The ring F and the disk D each have one hunroo and four columns at a time.

dred numbers, one hundred holes, and one hundred equal spaces, and the numbers are arranged on the spaces in line with the respective holes to which they pertain.

K is a spring-catch or spring-actu ated catch which is secured at one end to the under side of the back plate B. This catch is formed of a flat strip of sheet metal which is twisted near one end, so that the main portion is arranged edgewise, and it has a pin 7c, which projects upwardly into engagement with the holesj of the disk D.

L is a stud which projects upwardly from the free end'of:` the catch through a hole in the front plate A, and 7c is a button on the upper end of the stud above the front plate A. The button coverlaps the ring F and when depressed, so as to release the disk from the pin k, the button bears on the ring and forms a friction-brake, which prevents it from being revolved.

P is a trip on the under side of the ring F, which depresses the spring-catch automatically once in each revolution ot the said ring, engaging with a projection p on the catch between the `flanges of the ring.

M is a stop-bar which is secured to the uppcr side of the front plate A at its zero-space and which extends across the numbered spaces of the disk and ring. The free end portion of the stop-bar has a lobe or lip m, which projects laterally and is arranged in line with the Zero-space of the front plate. This lip is normally blank, and it may have numerals 1, 2, 3,7 ttc., placed on it in pencil or otherwise, so that they can be rubbed out and changed.

N is a spring-arm which is pivoted on the pin E under the spring g'. This arm is provided with an of't'set pointer n at its free end which points to the zero-space of the front plate A, so that the arm does not cover the spaces of the disk and ring, which are in line with the said Zero-space. In this manner a reading-space is formed between the said bar and arm.

O is aguide which is slidable longitudinally on the arm N, and 0 is an operating-pin carried by the guide and engaging with the holes of the disk or of the ring, according to the position of the guide on the said arm. A handle o is provided for operating the said arm and pin.

The machine shown in Figs. 1 to 3 is a tenthousand-capacity machine which adds three A It also has a provision for enabling it to indicate up to one million. Suppose the figures 3271, 935, and 321 are to be added in acolumn, thus making a total ot' 4527:

4527 The machine is first set to zero, as shown in the drawings, zero showing on the disk and on the ring close above the stop-bar and in line with Zero on the front plate, and the disk being locked by the catch to the front plate. The figures on the front plate are the indexfigures for all operations and serve no other purpose. The figures 321, being portions of a column of three figures, are taken first. The operating-pin is placed in theholein the disk which comes opposite the index-figure 3 of the front plate. The push-button is pressed, so as to release the disk and hold the ring stationary, and the disk is revolved to the right by the operating-pin until it strikes the stop'banwhen 300 will be shown at the reading-space. The push-button is then released, so as to free the ring andlock the disk. The operating-pin is then inserted in the hole of the ring opposite theindex-figure 21of the front plate, and the ring is revolved until the operating-pin strikes the stopbar, and 321 is shown at the reading-space. The next figures 935 are added to the 321 in a similar manner. The operating-pin is first inserted in the hole of the disk opposite the figure 9 on the front plate, and the disk is released and turned until the pin strikes the stop-bar. The operating-pin is then inserted in the hole of the ring opposite the ligure 35 of the Jfront plate, and the ring is then rcleased and revolved until the pin strikes the stop-bar. This causes the figures 1221 to be displayed at the reading-space, and these figures are the sum of 321 and 935. The remaining figures 3271, which are part of a column of' four figures, are now added in a similar manner. The operating-pin is first inserted in the hole of the disk opposite 32 on the front plate and then in the hole in the ring opposite the 71 on the front plate. The disk is movedifirst and then the ring, said disk and ring being released and locked alternately by means of the push-button and catch. When this has been accomplished, the figures 4527 are displayed at the reading space, and these figures are the sum of those selected as an example. Vhen the sum of any column of figures closely approaches ten thousand, the numeral 1 is placed with a pencil or otherwise temporarily on the lobe of the stop-bar as a memorandum. The 1nachine is then adapted to add ten thousand more, as hereinbet'ore described,and when the sum closely approaches twenty thousand the numeral 1 can be erased from the lobe and a numeral 2 substituted for it. Other numerals can be placed on the lobe as each additional ten thousand is added on the machine until 100 is placed on the lobe, thus enabling the machine to indicate upto one million. Each time the ring makes one complete revolution :its trip P depresses the springcatch, and the disk D is revolved one space automatically by friction al contact with the said ring. The pin of the spring-catch thon drops into the next hole ot' the disk and holds the disk stationary until the ring` has made another complete revolution.

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voren In one form of the machine the spring-arm may be dispensed with and the operating-pin and its handle may be held in the lingers like a pencil and placed in engagement with the holes of the ring and disk one after the other and moved into contact With the stop-bar, as hereinbefore described. rIhis form of the machine is illustrated in Figs. +L and 5, and it is also provided with an additional disk, so that larger total numbers may be added up. It is the additional disk, which is journaled on the pin E above the disk D. rIhe disk R is divided into one hundred spaces r, which are numbered the same as the spaces 71., fi, andj, and each space 1 is provided with a hole o. The stop-bar M is nov7 made of spring metal, and it is provided with a pin s at its free end which engages with the holes r in the same manner as the pin 7c of the spring-catch II engages with the holes of the disk D. The disk D is provided with a trip s for raising the pin S out of engagement with the disk R once in each revolution of the disk D. When the disk R is released, it is revolved by frictional contact With the disk D until the pin s drops into the next hole 0".

The operation of adding with the machine shown in Figs. I and 5 is the same as that hereinbefore described, and the sum of the numerals added is read off the disks and ring 3 from the spaces which come in line with the zero-space of the front plate and close above the stop-bar.

l. In a calculating-machine, the combination, with a front plate, a revoluble ring, and a disk journaled concentric with the said ring and provided With a circular series of holes; of a catch formed of a twisted strip of sheet metal secured at one end under the said parts and provided with a pin which engages With the holes of the said disk, and a stud which projects upwardly from the free end of the said catch through the said front plate and affords a means for disengaging 'the said catch-pin from the disk, substantially as set forth.

2. In a calculating-machine, the combination, with a front plate, a revoluble ring, and arevoluble disk; of locking mechanism which locks and releases the said ring and disk alternately to the said front plate, substantially as set forth.

3. In a calculating-machine, the combination, with a front plate, a revoluble ring, and a disk journaled concentric With the said ring and provided With a circular series of holes; of a catch provided with a pin which normally engages With one of the said holes, andafriction-brake Which bears on the said ring when the catch-pin is disengaged from the disk, substantially as set forth.

at. Ina calculating-machine, the combination, with a front plate, a revoluble ring provided with a circular series of holes, and a disk journaled concentric with the said ring and also provided With a circular series of holes; of a stop-bar formed of a flat strip of sheet metal secured at one end only to the said front plate and projecting across the said ring and the adjacent holes of the disk, substantially as set forth.

5. In a calculatirig-machine, the combination, with a front plate, and a revoluble ring and a disk arranged concentric with each other; of a stop-bar formed of a dat strip of sheet metal secured at one end'only to the said plate and having a laterally-projecting lobe at its free end over the said disk, substantially as set forth.

(5. In a calculating-machinc, the combination, with a front plate, and a revoluble ring and a disk each provided With a circular series of holes; of an arm pivoted concentric with the said ring and disk, and aguide slidable longitudinally on the said arm and carrying an operating-pin for engaging with the holes of either series, substantially as set forth.

'7. In a calculatingmachine, the combination, with a front plate provided with a zerospace, and a revoluble ring and a disk; of a stop-bar secured at one end to the said plate adjacent to the said Zero-space and provided with a laterally-proj ectin g lobe at its free end arranged yover the said disk in line with the said Zero-space, and an arm for operating the said ring and disk, said arm being pivoted concentric with the said ring and disk and provided with alaterally-offset pointer Which points to the space on the said front plate in line with the said lobe, areading-space being formed between the said bar and arm, substantially as set forth.

S. In a calculating-machine, the combination, with a front plate, and a revoluble ring and disk; of an additional disk pivoted concentric With the said ring and disk and pr'ovided With a circular series of holes, and a spring stop-bar secured to the said front plate at one end and provided at its free end with a catch-pin for engaging with the said holes of the additional disk, substantially as set forth.

9. In a calculating-machine, the combination, With a front plate, and a back plate secured to the front plate; of a ring provided with offset flanges Which bear on the said back plate and having a trip between the said flanges, a disk journaled in the said ring and provided with a circular series of holes, and a spring-catch secured at one end to the back plate and provided with a pin which engages with the said holes and having a projection arranged in the path of the said trip between the said anges, substantially as set forth.

10. In a calculating-machine, the combination, with a front plate provided With supporting-flanges, of a back plate suspended from the surface of the front plate above the bottom edges of the said flanges, and revolu ble calculating mechanism supported by the said back plate, substantially as set forth.

1l. In a calculating-machine, thc combina- IOC) IIO

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tion, With a front plate provided with snp porting-flanges and a hole, of a back plate suspended from the Surface of the front plate above the bottom edges of the said fianges, and a revolnble calculating-ring journaled in the said hole and provided With a peripheral flange which projects under the front plate and is supported bythe said back plate, substantially as set forth.

l2. In a calculating-machine, the combination, with a 'front plate provided with a hole, of a back plate secured to the front plate and provided With upwardly-projecting antifriction-bearings, and a revoluble calculatingring journaled in the said hole and resting on the said antifriction bearings of the baci; plate, substantially as set forth.

I3. In a calculating-machine, the combination, with a rectangular front plate provided with supporting-flanges, of a back plate provided with radial arms which project under the corner portions of the front plate, fastening devices which secure the end portions of the said arms to the under side of the Afront plate, and revoluble calculating mechanism supported by the said arms, substantially as set forth.

14. In a calcnlating-machine, the combination, with a front plate provided with a hole, of a back plate secured to the front plate, a calculating-ring journaled in the said hole and supported by the said back plato and provided with an internal-projecting flange, a calculating-disk journaled in the said ring and resting on its said flange, and a tension device supported from the said back plate and operating to press the said disk against. the flange of the said ring so as to afford a prearranged frictional resistance, substantially as set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

lVILLIAM G. POWELL. Witnesses:

HERBERT W. T. JENNER, LUTHER L. APPLE. 

